bug/837 Get implementation version from package meta information instead of spring configuration

lib/taskana-core/pom.xml

@@ -287,6 +287,17 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
+                        </manifest>
+                    </archive>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
     <!--

rest/taskana-rest-spring-example/src/main/resources/application.properties

@@ -22,9 +22,6 @@ devMode=false
 ####### property that control if the database is cleaned and sample data is generated
 generateSampleData=true
 
-####### Property that informs about the Taskana's version. This version is shown the application web
-version=@project.version@
-
 ####### control LDAP usage
 taskana.ldap.useLdap=false
 ####### properties to connect to LDAP

rest/taskana-rest-spring/src/main/java/pro/taskana/rest/TaskanaEngineController.java

@@ -2,7 +2,6 @@ package pro.taskana.rest;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -35,9 +34,6 @@ public class TaskanaEngineController {
         this.taskanaEngine = taskanaEngine;
     }
 
-    @Value("${version:Local build}")
-    private String version;
-
     @GetMapping(path = "/v1/domains", produces = {MediaType.APPLICATION_JSON_VALUE})
     public ResponseEntity<List<String>> getDomains() {
         return new ResponseEntity<>(taskanaEngineConfiguration.getDomains(), HttpStatus.OK);
@@ -90,7 +86,7 @@ public class TaskanaEngineController {
     public ResponseEntity<VersionResource> currentVersion() {
         LOGGER.debug("Entry to currentVersion()");
         VersionResource resource = new VersionResource();
-        resource.setVersion(version);
+        resource.setVersion(TaskanaEngineConfiguration.class.getPackage().getImplementationVersion());
         LOGGER.debug("Exit from currentVersion(), returning {}", new ResponseEntity<>(resource, HttpStatus.OK));
         return new ResponseEntity<>(resource, HttpStatus.OK);
     }

rest/taskana-rest-spring/src/test/java/pro/taskana/rest/resource/ConfigurationTest.java

@@ -0,0 +1,14 @@
+package pro.taskana.rest.resource;
+
+import org.junit.Test;
+import pro.taskana.configuration.TaskanaEngineConfiguration;
+
+import static org.junit.Assert.assertNotNull;
+
+public class ConfigurationTest {
+
+    @Test
+    public void testImplementationVersionIsInTaskanaCorePackage() {
+        assertNotNull(TaskanaEngineConfiguration.class.getPackage().getImplementationVersion());
+    }
+}